White balance processing method and system for color imaging of image sensor

Abstract

The invention relates to the technical field of image processing, in particular to a white balance processing method and system for color imaging of an image sensor, and the method comprises the following steps: 1), carrying out the statistics and function fitting of the data of R, G and B channels of a white region under different brightness, and making a gray mapping table in combination with an image gray value range; step 2), searching and mapping the gray value of the original image to be processed by using a gray mapping table to obtain a mapped gray value; and then the mapping gray value is converted, and a color image after white balance processing is obtained after conversion. According to the white balance processing method for color imaging of the image sensor, all operation procedures can be completed in common scenes, and the image processing speed is high. During operation, a correct color image after white balance processing can be output only by searching and correspondingly converting the data in the original image and the data in the gray mapping table.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a white balance processing method and system for color imaging of an image sensor. Background technique [0002] The 21st century is an era of informatization, and social development is gradually developing in the direction of intelligence, informatization, and automation. Image data acquisition has played a pivotal role in this development process. In every corner of life, every link of industrial application, and every stage of social development, imaging systems have become an indispensable key component. [0003] Under such a huge image market scale, the application requirements for imaging systems are diverse and advanced, which makes the volume and cost of imaging equipment have higher requirements. Image processing is one of the basic structures of imaging systems, and image white balance is the basic requirement of color image processing, so white balance proces...

AI Technical Summary

Problems solved by technology

At present, white balance processing algorithms include gray world method, dynamic threshold automatic adjustment method, mirror method, scale mapping method, color correlation method, etc., all of which have different levels of algorithm complexity and also have certain scene differences; while the processing effect Better neural network methods, machine learning methods, etc., due to the high processing capacity requirements, most systems cannot be implemented and applied, which in turn leads to an increase in system cost and volume, which has become an obstacle to the diverse applications of the system

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